How to translate the post/page content of a theme

I am working on a site in which I have to give the option of 3 languages on the front page.

I searched a lot and was successful in translating the theme using .pot files but it is translating only the default strings of WordPress.

I want to translate the post/page contents too which we are adding from wp-admin.
I don’t want to do it with any Google translator or sidebar plugin. I want to offer this option in the index page.

Any help will be welcome.